I have had experience with non fighters. There stand up is really bad. The throw slow highly telegraphed punches. Easy to avoid. You really dont need to get to detailed when fighting non trained people. Streight punches usually work fine. I will usually just work my jab until I find a opening for a right or hook to end it and then swarm the crap out of them.

You just bassically have to get the one shot in that will daze them and then swarm and finish. They will always ball up if they arent trained because they arent used to getting hit and you can just unload on them. Keep in mind you still have to keep proper form because nothing sucks more then a sucker punch

You can block his punches. Decent blocks will interrupt his swinging rythym, and slow it down - at least a little bit, temporarily. In that time, do what you want.

In a couple of times, I've had to face someone like that. I backed away, blocked, backed, blocked, pulled both of their arms down when they left them out, and punched them in the face.

Now, I would just take them to the ground. But that's what I did back in the day.

To add to this.

Outside of slowing him down, blocking his punches will both frustrate and tire him out.

If you're training the chances are your conditioning for fighting are incredibly high whereas his are incredibly low. Play defense until he tires himself out, then try to reason hoping he understands the consequences of continuing his pathetic attempts to knock you out. If he doesn't... Well, you don't have a choice, do you?

Outside of slowing him down, blocking his punches will both frustrate and tire him out.

If you're training the chances are your conditioning for fighting are incredibly high whereas his are incredibly low. Play defense until he tires himself out, then try to reason hoping he understands the consequences of continuing his pathetic attempts to knock you out. If he doesn't... Well, you don't have a choice, do you?

In future, please do not double post, and utilise the edit button to your full advantage.